Patent number: 4042580
Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is chloro, bromo, cyano, nitro, alkylsulfonyl, substituted alkylsulfonyl, phenylsulfonyl or substituted phenylsulfonyl,R.sub.2 is hydrogen, chloro or bromo,R.sub.3 is hydrogen, chloro, bromo or acylamino, with the proviso that at least one of R.sub.2 and R.sub.3 is hydrogen,R.sub.4 is hydrogen, alkyl, substituted alkyl, alkoxy or substituted alkoxy,Each of R.sub.5 and R.sub.6 is independently alkyl or substituted alkyl, wherein each substituent of substituted alkyl is independently chloro, bromo, cyano, hydroxy, alkoxy, chloroalkoxy, bromoalkoxy, cyanoalkoxy, formyloxy, alkylcarbonyloxy, substituted alkylcarbonyloxy, benzoyloxy, substituted benzoyloxy, alkoxycarbonyl, substituted alkoxycarbonyl, phenoxycarbonyl, substituted phenoxycarbonyl, alkoxycarbonyloxy, substituted alkoxycarbonyloxy, phenoxycarbonyloxy or substituted phenoxycarbonyloxy,R.sub.7 is alkyl or substituted alkyl,X is --CO--, --CO.sub.2 -- or --SO.sub.2 --, and n is 2, 3 or 4.
Type:
Grant
Filed:
March 3, 1975
Date of Patent:
August 16, 1977
Assignee:
Sandoz Ltd.
Inventor:
Wolfgang Groebke